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In a message dated 12/31/2007 1:39:57 P.M. Central Standard Time,
randylsnarr@yahoo.com writes:
I am looking for feedback from those who pull fuel directly from
their wings that do not have slosh boxes installed. My fuel pickups
are in the typical place (BL 50 about 2/3 of the way back between
the front and rear spar).
I am contemplating changing the fuel system with a 3 way valve
to pull from Left Main and Right tanks.
I would be very interested to know if you ever unport the
fuel and under which conditions it happens if ever.
Randy:
My 235 has a 2-way fuel selector (wings/nose/off). In the 235 wing,
the D-section is the fuel tank. The pickup is at the aft inboard
corner, just in front of the spar. I routinely run the wings completely
dry before switching to the nose tank in flight. The engine is starved
of fuel for about 3-5 seconds. I have not found that any amount
of slip has caused unporting. Your mileage will vary, as you
have a completely different fuel tank location and shape.
Each wing tank is connected to a rattle pump and check valve.
The output of the check valve goes to the selector valve, and also
to the header tank. Turning on a pump transfers fuel from the
respective wing to the nose. So far, I have no complaints since
switching to this system.
BTW, here's a link to an earlier thread on what could happen if the
three-way-valve leaks:
http://lancaironline.net/lists/lml/Message/40862.html
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